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Expired Canadian patentCanada

Method and apparatus for centralized monitoring and analysis of virtual private networks

CA 2535157 C · Owner: At&T Corp. · Inventors: Roy, Sumantra; Quinn, Patricia B.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In one embodiment, the present invention is a method and apparatus for monitoring virtual private networks (VPNs) supported on a multiprotocol label switching (MPLS) backbone network. In one embodiment a method for remote monitoring of a VPN supported on an MPLS backbone network includes capturing traffic to and/or from the virtual private network (e.g. via a network probe) and analyzing the captured traffic in accordance with one or more service objectives. In another embodiment the present invention involves remotely simulating network conditions in a virtual private network for example by sending test patterns to a shared customer edge router connected to the virtual private network …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed February 2, 2006 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 2, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 2, 2006
GrantedJanuary 22, 2013
Term endedFebruary 2, 2026
Patent numberCA 2535157 C
Classification (IPC)H04L43/08 +2 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedFeb 2, 2006Patent grantedJan 22, 2013Term endedFeb 2, 2026

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.